In cellular Biology, the term Organite (or organelle ) indicates various specialized structures contained in the Cytoplasme of the cells Eucaryotes and delimited by a membrane.

Some organoids of big size have a clean genome, out of the core (2), and most probably have a endosymbiotic origin  :

• the Mitochondrion S (9), including one most of the Génome is present in the core (2), are energy power stations of the cell eucaryote. The use of oxygen enables them to finish the oxidation of glucose much more effectively than fermentation in the cytosol, by producing much ATP (Tri Adenosine Phosphates, small molecule storing energy in its chemical bonds, instantaneously available).   ;
• the Plastid S, at the plants only (absent from the diagram), comprising Ribosome S, and able to multiply in the vegetable cytoplasm.

Simple: Organelle